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49,934
RESULTS

Media Type
14
collections
41,013
texts
4,410
movies
3,890
audio
437
images
120
data
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Topics & Subjects
14,683
Water Supply
12,843
Sanitation
12,802
Public Health
12,470
Disease Outbreaks
7,258
NASA Technical Reports Server (NTRS)
4,756
water
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Collection
14,918
The Medical Heritage Library
14,834
European Libraries
14,751
UK Medical Heritage Library
14,492
Wellcome Library
14,313
Medical Officer of Health reports
8,610
American Libraries
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Creator
7,258
nasa technical reports server (ntrs)
1,848
defense technical information center
1,472
united states. soil conservation service
1,010
eric
888
water mark church
421
california. dept. of water resources
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Language
43,888
English
141
French
106
German
41
Dutch
39
Spanish
35
Italian
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